What two elements were the first to form?
What will be an ideal response?
Hydrogen and helium.
Environmental & Atmospheric Sciences
You might also like to view...
Describe the hydrologic cycle and draw a diagram to illustrate the circulation of water in the atmosphere.
What will be an ideal response?
Environmental & Atmospheric Sciences
Clastic sedimentary rocks are classified based on:
a) Color b) Type of bedding c) Mineral composition d) Chemical composition e) Size and shape of sediment grains
Environmental & Atmospheric Sciences
When coal is burned to generate electricity, 70% of the primary energy in the coal is transformed into unused heat. This means that the energy conversion efficiency from chemical to electrical energy is ________
A) 70% B) 30% C) 0% D) 100% E) cannot be determined
Environmental & Atmospheric Sciences
Which of the following areas has the lowest total fertility rate (TFR)?
Environmental & Atmospheric Sciences